QPointF

The QPointF class defines a point in the plane using floating point precision. More

Inheritance diagram of PySide2.QtCore.QPointF

Synopsis

Functions

Static functions

Detailed Description

A point is specified by a x coordinate and an y coordinate which can be accessed using the x() and y() functions. The coordinates of the point are specified using floating point numbers for accuracy. The isNull() function returns true if both x and y are set to 0.0. The coordinates can be set (or altered) using the setX() and setY() functions, or alternatively the rx() and ry() functions which return references to the coordinates (allowing direct manipulation).

Given a point p , the following statements are all equivalent:

p = QPointF()

p.setX(p.x() + 1.0)
p += QPointF(1.0, 0.0)
#p.rx()++;

A QPointF object can also be used as a vector: Addition and subtraction are defined as for vectors (each component is added separately). A QPointF object can also be divided or multiplied by an int or a qreal .

In addition, the QPointF class provides a constructor converting a QPoint object into a QPointF object, and a corresponding toPoint() function which returns a QPoint copy of this point. Finally, QPointF objects can be streamed as well as compared.

See also

QPoint QPolygonF

class QPointF

QPointF(p)

QPointF(QPointF)

QPointF(xpos, ypos)

param ypos

qreal

param p

QPoint

param xpos

qreal

param QPointF

QPointF

Constructs a null point, i.e. with coordinates (0.0, 0.0)

See also

isNull()

Constructs a copy of the given point .

See also

toPoint()

Constructs a point with the given coordinates (xpos , ypos ).

See also

setX() setY()

PySide2.QtCore.QPointF.__reduce__()
Return type

PyObject

PySide2.QtCore.QPointF.__repr__()
Return type

PyObject

static PySide2.QtCore.QPointF.dotProduct(p1, p2)
Parameters
Return type

qreal

QPointF p( 3.1, 7.1);
QPointF q(-1.0, 4.1);
int lengthSquared = QPointF::dotProduct(p, q);   // lengthSquared becomes 26.01

Returns the dot product of p1 and p2 .

PySide2.QtCore.QPointF.isNull()
Return type

bool

Returns true if both the x and y coordinates are set to 0.0 (ignoring the sign); otherwise returns false .

PySide2.QtCore.QPointF.manhattanLength()
Return type

qreal

Returns the sum of the absolute values of x() and y() , traditionally known as the “Manhattan length” of the vector from the origin to the point.

PySide2.QtCore.QPointF.__ne__(p2)
Parameters

p2QPointF

Return type

bool

PySide2.QtCore.QPointF.__mul__(m)
Parameters

mQMatrix

Return type

QPointF

PySide2.QtCore.QPointF.__mul__(matrix)
Parameters

matrixQMatrix4x4

Return type

QPointF

PySide2.QtCore.QPointF.__mul__(matrix)
Parameters

matrixQMatrix4x4

Return type

QPointF

PySide2.QtCore.QPointF.__mul__(m)
Parameters

mQTransform

Return type

QPointF

PySide2.QtCore.QPointF.__mul__(c)
Parameters

cqreal

Return type

QPointF

PySide2.QtCore.QPointF.__mul__(c)
Parameters

cqreal

Return type

QPointF

PySide2.QtCore.QPointF.__imul__(c)
Parameters

cqreal

Return type

QPointF

Multiplies this point’s coordinates by the given factor , and returns a reference to this point. For example:

p = QPointF(-1.1, 4.1)
p *= 2.5  # p becomes (-2.75, 10.25)

See also

operator/=()

PySide2.QtCore.QPointF.__add__()
Return type

QPointF

PySide2.QtCore.QPointF.__add__(p2)
Parameters

p2QPointF

Return type

QPointF

PySide2.QtCore.QPointF.__iadd__(p)
Parameters

pQPointF

Return type

QPointF

Adds the given point to this point and returns a reference to this point. For example:

p = QPointF( 3.1, 7.1)
q = QPointF(-1.0, 4.1)
p += q    # p becomes (2.1, 11.2)

See also

operator-=()

PySide2.QtCore.QPointF.__sub__()
Return type

QPointF

PySide2.QtCore.QPointF.__sub__(p2)
Parameters

p2QPointF

Return type

QPointF

PySide2.QtCore.QPointF.__isub__(p)
Parameters

pQPointF

Return type

QPointF

Subtracts the given point from this point and returns a reference to this point. For example:

p = QPointF( 3.1, 7.1)
q = QPointF(-1.0, 4.1)
p -= q    # p becomes (4.1, 3.0)

See also

operator+=()

PySide2.QtCore.QPointF.__div__(divisor)
Parameters

divisorqreal

Return type

QPointF

PySide2.QtCore.QPointF.__idiv__(c)
Parameters

cqreal

Return type

QPointF

Divides both x and y by the given divisor , and returns a reference to this point. For example:

p = QPointF(-2.75, 10.25)
p /= 2.5  # p becomes (-1.1, 4.1)

See also

operator*=()

PySide2.QtCore.QPointF.__eq__(p2)
Parameters

p2QPointF

Return type

bool

PySide2.QtCore.QPointF.setX(x)
Parameters

xqreal

Sets the x coordinate of this point to the given x coordinate.

See also

x() setY()

PySide2.QtCore.QPointF.setY(y)
Parameters

yqreal

Sets the y coordinate of this point to the given y coordinate.

See also

y() setX()

PySide2.QtCore.QPointF.toPoint()
Return type

QPoint

Rounds the coordinates of this point to the nearest integer, and returns a QPoint object with the rounded coordinates.

See also

QPointF()

PySide2.QtCore.QPointF.toTuple()
Return type

PyObject

PySide2.QtCore.QPointF.x()
Return type

qreal

Returns the x coordinate of this point.

See also

setX() rx()

PySide2.QtCore.QPointF.y()
Return type

qreal

Returns the y coordinate of this point.

See also

setY() ry()